Avoid useless copies in range-loops that are using 'auto'

Avoid useless copies in range-loops that are using 'auto'
https://bugs.webkit.org/show_bug.cgi?id=150091

Reviewed by Sam Weinig.

Avoid useless copies in range-loops that are using 'auto'. Also use
'auto*' instead of 'auto' when range values are pointers for clarity.
Source/bmalloc:

* bmalloc/Deallocator.cpp:
(bmalloc::Deallocator::processObjectLog):

Source/WebKit/mac:

* WebView/WebFrame.mm:
(-[WebFrame getDictationResultRanges:andMetadatas:]):

Source/WebKit2:

* UIProcess/VisitedLinkStore.cpp:
(WebKit::VisitedLinkStore::pendingVisitedLinksTimerFired):
(WebKit::VisitedLinkStore::resizeTable):
* UIProcess/WebProcessProxy.cpp:
(WebKit::WebProcessProxy::releaseRemainingIconsForPageURLs):
* UIProcess/WebsiteData/WebsiteDataStore.cpp:
(WebKit::WebsiteDataStore::fetchData):
(WebKit::WebsiteDataStore::removeData):
(WebKit::WebsiteDataStore::plugins):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@191002 268f45cc-cd09-0410-ab3c-d52691b4dbfc